By stretching the rubber strings of a catapult we store .......... energy in it.

p o t e n t i a l

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e l e c t r i c a l

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h e a t

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k i n e t i c

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Solution

The correct option is C $p o t e n t i a l$
Answer: Potential Energy
The energy exerted or work done by our muscles on the rubber band is consumed in changing its shape. It gets stored in the stretched rubber band as its potential energy. It is this stored energy that is used by the rubber band to move to its original state, shape, and size. When the rubber band is released, this stored potential energy gets converted into kinetic energy.
If a pebble is placed in contact with the stretched rubber band, this kinetic energy is transferred to the pebble. This kinetic energy of the pebble is enough to do some destructive work, like breaking a glass window, injuring someone, etc.

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Fill in the blanks

(1) The energy stored in the dry cell is in the form of …………. .

(2) The work done is zero if there is no ……………… .

(3) Flowing water has ……………. energy.

(4) By stretching the rubber strings of a catapult we store …………….. energy in it.

What type of energy is possessed :

(a) by the stretched rubber strings of a catapult ?

(b) by the piece of stone which is thrown away on releasinig the stretched rubber strings of catapult ?

2 c m

U

10 c m

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